Galilee geological model 17.09.14

Brief description

## **Abstract**

The dataset was derived by the Bioregional Assessment Programme. The parent datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.



This dataset is comprised of interpreted extents, contours, and elevation grids, for the major Triassic and upper Permian units of the Galilee Geological Basin.

## **Purpose**

This dataset was created to provide formation extents for aquifers in the Galilee geological basin.

## **Dataset History**

A Quality Assurance (QA) and validation process was conducted on the original well and bore data to choose wells/bores that are within 25 kilometres of the BA Galilee Region extent.

The QA/Validation process is as follows:

1.\tWell data

a.\tObtained excel file "QPED_July_2013_galilee.xlsx" from GA

b.\tBased on stratigraphic information in "BH_costrat" tab formation names were regularised and simplified based on current naming conventions.

c. \tSimplified names added to QPED_July_2013_galileet.xlsx as "Steve_geo" and "Steve_group"

d.\tProduced new file "GSQ_Geology.xlsx" contained decimal latitude and longitude, KB elevation, top of unit in metres from KB, top of unit in metres AHD, bottom of unit in metres from KB, bottom of unit in metres AHD, original geology, simplified geology, simplified Group geology.

i. KB obtained from "BH_wellhist"

ii.\t Where no KB information was available ie KB=0, sample the 1S DEM at the well's location to obtain height. KB=DEM+10. Marked well as having lower reliability.

iii.\t Calculated Top_m_AHD = KB - Top_m_KB

iv.\t Calculated Bottom_m_AHD = KB - Bottom_m_KB

e.\tBrought GSQ_Geology.xlsx into ArcGIS

f.\t Selected wells based on "Steve_geo" field for each model layer to produce a geodatabase for each layer.

i.\t GSQ_basement_wells

ii.\t GSQ_top_joe_joe_group

iii.\t GSQ_top_bandanna_merge

iv.\t GSQ_rewan_group

v.\t GSQ_clematis

vi.\t GSQ_moolyember

g.\tAdditional wells and reinterpreted tops added to appropriate geodatabase based on well completion reports

h.\tAdditional wells added to coverages to help model building process

i.\t Well_name listed as Fake

ii.\t Exception being GSQ_top_basement_fake which was created as a separate geodatabase

2.\tBore data

a.\tObtained QLD_DNRM_GroundwaterDatabaseExtract_20131111 from GA

b.\tUsed files REGISTRATIONS.txt, ELEVATIONS.txt and AQUIFER.txt to build GW_stratigraphy.xlsx

i.\t Based on RN

ii.\t Latitude from GIS_LAT (REGISTRATIONS.txt)

iii.\t Longitude from GIS_LNG (REGISTRATIONS.txt)

iv.\t Elevation from (ELEVATIONS.txt)

v.\t FORM_DESC from (AQUIFER.txt)

vi.\t Top from (AQUIFER.txt)

vii. \t Bottom from (AQUIFER.txt)

c.\t Brought GW_stratigraphy.xlsx into ArcGIS

d.\tCreated gw_bores_galilee_dem

i.\t Sampled 1S DEM to obtain ground level elevation column RASTERVALU

ii.\t Created column top_m_AHD by RASTERVALU - Top

e.\tSelected bores based on "FORM_DESC" field for each model layer to produce a geodatabase for each layer.

i.\t Gw_basement

ii.\t GW_bores_joe_joe_group

iii.\t GW_bores_bandanna

iv. \t Gw_bores_rewan

v. \t Gw_bores_clematis

vi. \t Gw_bores_moolyember

3.\tGeorectified seismic surfaces

a.\tExtracted interpreted seismic surfaces for base Permian (interpreted as basement) and top Bandanna (in time) from the following seismic surveys

i.\t Y80A, W81A, Carmichael, Pendine, T81A, Quilpie, Ward and Powell Creek seismic survey downloaded https://qdexguest.deedi.qld.gov.au/portal/site/qdex/search?searchType=general

ii.\t Brought TIF images into ArcGIS and georectified

iii.\t Digitised shape of contours and faults into geodatabase

1.\t Basement_contours and basement_faults

2.\t bandanna_contours_new_data and bandanna_faults

iv.\t Added field "contour" to geodatabase

v.\t Converted contours to depth in "contour" field based on well and bore data (top_m_AHD) and contour progression

vi.\t Use the shape and depth derived from OZ SEEBASE to help to add additional contours and faults to basement and bandanna datasets

4.\tAdditional contour and fault surfaces were built derived from underlying surfaces and wells/bore data

a.\tJoejoe_contours and joejoe)faults

b.\tRewan_contour_clip (used bandanna_faults as fault coverage)

c. \tClematis_contour and clematis_faults

d.\tMoolyember_contour (used clematis_faults as fault coverage)

5.\tSurface geology

a.\tExtracted surface geology from QUEENSLAND GEOLOGY_AUGUST_2012 using Galilee BA region boundary with 25 kilometre boundary to form geodatabase QLD_geology_galilee

b.\tSelected relevant surface geology from QLD_geology_galilee based on field "Name" for each model layer and created new geodatabase layers

i.\t Basement_geology: Argentine Metamorphics,Running River Metamorphics,Charters Towers Metamorphics; Bimurra Volcanics, Foyle Volcanics, Mount Wyatt Formation, Saint Anns Formation, Silver Hills Volcanics, Stones Creek Volcanics; Bulliwallah Formation, Ducabrook Formation, Mount Rankin Formation, Natal Formation, Star of Hope Formation; Cape River Metamorphics; Einasleigh Metamorphics; Gem Park Granite; Macrossan Province Cambrian-Ordovician intrusives; Macrossan Province Ordovician-Silurian intrusives; Macrossan Province Ordovician intrusives; Mount Formartine, unnamed plutonic units; Pama Province Silurian-Devonian intrusives; Seventy Mile Range Group; and Kirk River beds, Les Jumelles beds.

ii.\t Joe_joe_geology: Joe Joe Group

iii.\t Galilee_permian_geology: Back Creek Group, Betts Creek Group, Blackwater Group

iv.\t Rewan_geology: Rewan Group

1.\t Later also made dunda_beds_geology to be included in Rewan model: Dunda beds

v.\t Clematis_geology: Clematis Group

1.\t Later also made warang_sandstone_geology to be included in Clematis model: Warang Sandstone

vi.\t Moolyember_surface_geology: Moolyember Formation

6.\tDEM for each model layer

a.\tUsing surface geology geodatabase extent extract grid from dem_s_1s to represent the top of the model layer at the surface

i.\t Basement_dem

ii.\t Joejoe_dem

iii.\t Bandanna_dem

iv.\t Rewan_dem and dunda_dem

v.\t Clematis_dem and warang_dem

vi.\t Moolyember_surface_dem

b.\tUsed Contour tool in ArcGIS to obtain a 25 metre contour geodatabase from the relevant model DEM

i.\t Basement_dem_contours

ii.\t Joejoe_dem_contours

iii.\t Bandanna_dem_contours

iv.\t Rewan_dem_contours and dunda_dem_contours

v.\t Clematis_dem_contours and warang_dem_contours

vi.\t Moolyember_dem_contours

c. \tFor the purpose of guiding the model building process additional fields were added to each DEM contour geodatabase was added based on average thickness derived from groundwater bores and petroleum wells.

i.\t Basement_dem_contours: Joejoe, bandanna, rewan, clematis, moolyember

ii.\t Joejoe_dem_contours: basement, bandanna

iii.\t Bandanna_dem_contours: joejoe, rewan

iv.\t Rewan_dem_contours and dunda_dem_contours: clematis, rewan

v.\t Clematis_dem_contours and warang_dem_contours: moolyember, rewan

vi.\tMoolyember_dem_contours: clematis



The model building process is as follows:

1.\tUsed the tope to raster tool to create surface based on the following rules

a.\tEnvironment

i.\tExtent

1.\tTop: -19.7012030024424

2.\tRight: 148.891511819054

3.\tBottom: -27.5812030024424

4.\tLeft: 139.141511819054

ii.\tOutput cell size: 0.01 degrees

iii.\tDrainage enforcement: No_enforce

b.\tInput

i.\tBasement

1.\tBasement_dem_contour; field - contour; type - contour

2.\tJoejoe_dem_contour; field - basement; type - contour

3.\tBasement_contour; field - contour; type - contour

4.\tGSQ_basement_wells; field - top_m_AHD; type - point elevation

5.\tGW_basement; field - top_m_AHDl type - point elevation

6.\tGSQ_top_basement_fake; field - top_m_AHDl type - point elevation

7.\tBasement_faults; type - cliff

ii.\tJoe Joe Group

1.\tJoejoe_dem_contour; field - basement; type - contour

2.\tBasement_dem_contour; field - joejoe; type - contour

3.\tpermian_dem_contour; field - joejoe, type - contour

4.\tjoejoe_contour; field - joejoe; type - contour

5.\tGSQ_top_joejoe_group; field - top_m_AHD; type - point elevation

6.\tGW_bores_joe_joe_group; field - top_m_AHDl type - point elevation

7.\tjoejoe_faults; type - cliff

iii.\tBandanna Group

1.\tPermian_dem_contour; field - contour; type - contour

2.\tJoejoe_dem_contour; field - bandanna; type - contour

3.\tRewan_dem_contour: field - bandanna; type - contour

4.\tDunda_dem_contour; field - bandanna; type - contour

5.\tBasement_dem_contour; field - bandanna; type - contour

6.\tbandanna_contours_new_data; field - contour; type - contour

7.\tGSQ_top_bandanna_merge; field - top_m_AHD; type - point elevation

8.\tGW_bores_bandanna; field - top_m_AHDl type - point elevation

9.\tbandanna_faults; type - cliff

iv.\tRewan

1.\tRewan_dem_contour: field - contour; type - contour

2.\tDunda_beds_contour; field - contour; type - contour

3.\tPermian_dem_contour; field - rewan; type - contour

4.\tClematis_dem_contour; field - rewan; type - contour

5.\tWarang_dem_contour; field - rewan; type - contour

6.\tBasement_dem_contour; field - rewan; type - contour

7.\tRewan_contours_clip; field - rewan; type - contour

8.\tGSQ_rewan_group; field - top_m_AHD; type - point elevation

9.\tGw_bores_rewan; field - top_m_AHD; type - point elevation

10.\tBandanna_faults; type - cliff

v.\tClematis

1.\tClematis_dem_contour; field - contour; type - contour

2.\tWarang_dem_contour; field - contour; type - contour

3.\tRewan_dem_contour: field - clem; type - contour

4.\tDunda_beds_contour; field - clematis; type - contour

5.\tBasement_dem_contour; field - clematis; type - contour

6.\tclematis_contours; field - contour; type - contour

7.\tGSQ_clematis; field - top_m_AHD; type - point elevation

8.\tGw_bores_clematis; field - top_m_AHD; type - point elevation

9.\tClematis_faults; type - cliff

vi.\tMolyember

1.\tMoolyember_dem_contour; field - contour; type - contour

2.\tClematis_dem_contour; field - moolyember; type - contour

3.\tWarang_dem_contour; field - moolyember; type - contour

4.\tBasement_dem_contour; field - moolyember; type - contour

5.\tmoolyember_contours; field - contour; type - contour

6.\tGSQ_moolyember; field - top_m_AHD; type - point elevation

7.\tGw_bores_moolyember; field - top_m_AHD; type - point elevation

8.\tClematis_faults; type - cliff

vii.\tFinished Grids save in Unclipped Tops layer group

viii.\tBottom B Seam and Top E Seam are sub-division of the Bandanna Group

1.\tDerived Bandanna thickness (bandanna_thickness)

a.\tTop Bandanna minus Top Joe Joe Group

2.\tBottom B Seam thickness (bseam_temp) by 0.25 times Bandanna Thickness

3.\tBottom E Seam thickness (eseam_temp) by 0.7 times Bandanna Thickness

4.\tSubtract Bottom B Seam thickness from Top Bandanna Group to produce Bseam_unclipped

5.\tSubtract Top E Seam thickness from Top Bandanna Group to produce Eseam_unclipped



2.\tUnclipped tops clipped to layer extent using extract by mask tool

a.\tExtent files

i.\tBasement: galilee_subregion

ii.\tJoe Joe Group: joe_joe_top_extent_poly

iii.\tBandanna Group: bandanna_extent

iv.\tRewan: rewan_top_extent

1.\tBottom B Seam: bseam_bottom_extent

2.\tTop E Seam: eseam_top_extent

v.\tClematis: clematis_warang_top_extent

vi.\tMoolyember: moolyember_top_extent

b.\tResulting layers save in Completed layer group

3.\tCross check of model were done by subtracting overlying layers from underlying layers.

4.\tWhere overlaps occur edit relevant datasets and rebuild model layer.

5.\tRepeat until no overlaps occur.

## **Dataset Citation**

Bioregional Assessment Programme (2014) Galilee geological model 17.09.14. Bioregional Assessment Derived Dataset. Viewed 07 December 2018, http://data.bioregionalassessments.gov.au/dataset/54da02a1-b222-4272-9313-1eed01a7b7b3.

## **Dataset Ancestors**

* **Derived From** [Queensland Geological Digital Data - Detailed state extent, regional. November 2012](https://data.gov.au/data/dataset/03ea9d87-55f1-400e-86c0-b8f7492984c4)

* **Derived From** [QLD Department of Natural Resources and Mines Groundwater Database Extract 20142808](https://data.gov.au/data/dataset/a5c5cbdb-1152-43f7-9533-a123027b7ce1)

* **Derived From** [Phanerozoic OZ SEEBASE v2 GIS](https://data.gov.au/data/dataset/26e0fbd9-d8d0-4212-be52-ca317e27b3bd)

* **Derived From** [Queensland petroleum exploration data - QPED](https://data.gov.au/data/dataset/cb357721-bf22-45c9-a82e-828807912dd4)

Full description

Galilee geological model 17.09.14 - Data File